Home / 20,122.56-27,763.49-12,576.56

Finding the Fourth Proportional to 20,122.56, 27,763.49 and 12,576.56

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Solution

The fourth proportional to 20,122.56, 27,763.49 and 12,576.56 is: 17,352.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.56 : 27,763.49 = 12,576.56 : x
  2. Step 2: Convert to fraction form
    20,122.56/27,763.49 = 12,576.56/x
  3. Step 3: Cross multiply
    20,122.56x = 27,763.49 × 12,576.56
  4. Step 4: Simplify right side
    20,122.56x = 349,169,197.79
  5. Step 5: Solve for x
    x = 349,169,197.79/20,122.56
  6. Step 6: Final answer
    x = 17,352.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.